.\" -*- nroff -*-
.TH WHICH 1 "29 Jun 2016" "Debian"
.SH NAME
which \- locate a command
.SH SYNOPSIS
which [\-as] filename ...
.SH DESCRIPTION
.B which
returns the pathnames of the files (or links) which would be executed
in the current environment,
had its arguments been given as commands in a strictly
POSIX-conformant shell.
It does this by searching the PATH for executable files matching the
names of the arguments.
It does not canonicalize path names.
.SH OPTIONS
.TP
.B \-a
print all matching pathnames of each argument
.TP
.B \-s
silently return 0 if all of the executables were found 
or 1 otherwise
.SH EXIT STATUS
.TP
.B 0
if all specified commands are found and executable
.TP
.B 1
if one or more specified commands is nonexistent or not executable
.TP
.B 2
if an invalid option is specified
